According to Victor Neher, was used in Mariners II and IV in 1962 and 1964. Inscribed by Neher: “the last chamber.”

ID number

ST-CR-09

Title

Demonstration model, electron wave theory

Abstract

According to Mendenhall notes, this appears to be the demonstration model for C.J. Davisson's electron wave theory, which won a Nobel Prize in 1937. No more information is available. Glass hull, many contacts, partially painted grayish-black.

ID number

ST-ME-09

Title

Claude Lorraine mirror in box

Abstract

Nothing more in known about this item.

ID number

ST-MU-09

Title

Grating, concave

Abstract

This grating was ruled on speculum; a light aluminum coat has since been applied. The plate was prepared by the John A. Brashear Co., Allegheny, PA. It was ruled on Prof. Henry Rowland's engine at Johns Hopkins Univ., Baltimore, MD. Used by Bowen and Millikan from 1919 on.

ID number

ST-PH-09

Title

Cell compartment, DU spectrophotometer

Abstract

Black metal, heavy, trough-shaped, one end mounted and raised on adjustable legs. Not shown in Instruction Manuals for DU spectrophotometer as standard equipment. Possibly shop-made.